4-3

Using a Custom Probe

kAuto Calibrating a Custom Probe

Auto calibration automatically corrects the slope and intercept values of a custom probe setup based on two actual samples.

Important!

•Before performing the procedure below, you should prepare two conditions whose measurement values are known.

•When inputting reference value in step 5 of the procedure below, input the exact known measurement value of the condition you will sample in step 4. When inputting reference value in step 7 of the procedure below, input the exact known measurement value of the condition you will sample in step 6.

u To auto calibrate a custom probe

1.Connect the calculator and EA-200, and connect the custom probe you want to auto calibrate to CH1 of the EA-200.

2.What you should do first depends on whether you are configuring a new custom probe for calibration, or editing the configuration of an existing custom probe.

If you are configuring a new custom probe:

•Perform steps 1 through 6 of the procedure under “To configure a custom probe setup” on page 4-1.

•Auto calibrate will automatically set the slope and intercept, so you do not need to specify them in step 6 of the above procedure.

If you are editing the configuration of an existing custom probe:

•Perform steps 1 through 3 of the procedure under “To edit a custom probe setup” on page 4-6.

3.Press 2(CALIB).

•This will start the first sampling operation with the sensor connected to EA-200’s CH1, and then display a screen like the one shown below.

First sampling operation

Real-time display of sampled values

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